_______ flash an ad to a subject with an exposure interval that may range from less than one hundredth of a second to several seconds.

_______ flash an ad to a subject with an exposure interval that may range from less than one hundredth of a second to several seconds.

________ flash an ad to a subject with an exposure interval that may range from less than one hundredth of a second to several seconds. 



A) Tachistoscopes
B) Audiometers
C) Polygraphs
D) GPS systems
E) Galvanometers


Answer: A


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